What's the plural form of autoconvolution? Here's the word you're looking for.
Answer
The noun autoconvolution can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be autoconvolution.
However, in more specific contexts, the plural form can also be autoconvolutions e.g. in reference to various types of autoconvolutions
or a collection of autoconvolutions.